[1, 1] type: Separator, N: [
[1, 2] type: KeyWord, N: for
[1, 5] type: Separator, N: ]
[1, 7] type: Separator, N: {
[1, 9] type: Separator, N: }
[1, 11] type: KeyWord, N: int
[1, 15] type: Identeficator, N: a
[1, 16] type: Operation, N: ++
[1, 19] type: Operation, N: -
[1, 21] type: Operation, N: <=
